Preface

This book is the official documentation of PostgreSQL. It has been written by the
PostgreSQL developers and other
volunteers in parallel to the development of the PostgreSQL software. It describes all the
functionality that the current version of PostgreSQL officially supports.

To make the large amount of information about PostgreSQL manageable, this book has been
organized in several parts. Each part is targeted at a different
class of users, or at users in different stages of their
PostgreSQL experience: